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  1. Pluto: Facts - NASA Science

    Apr 22, 2025 · Pluto is a complex and mysterious world with mountains, valleys, plains, craters, and glaciers. It is located in the distant Kuiper Belt. Discovered in 1930, Pluto was long …

  2. Pluto - Wikipedia

    Pluto and Charon are sometimes considered a binary system because the barycenter of their orbits does not lie within either body, and they are tidally locked. New Horizons was the first …

  3. Pluto | Size, Moons, Temperature, & Facts | Britannica

    Sep 28, 2025 · Pluto, large, distant member of the solar system that formerly was regarded as the outermost and smallest planet. In 2006 a group of experts in the scientific community voted to …

  4. Pluto - Science@NASA

    Apr 29, 2025 · NASA's New Horizons was the first and, so far, the only mission to explore Pluto. New Horizons also was the first mission to explore the solar system's recently discovered …

  5. Pluto: Exploration - NASA Science

    Apr 21, 2025 · NASA's New Horizons was the first and, so far, the only mission to Pluto. It was also the first mission to explore the solar system's recently discovered "third zone," the region …

  6. All About Pluto | NASA Space Place – NASA Science for Kids

    Sep 25, 2025 · Pluto is a dwarf planet that lies in the Kuiper [KI-per] Belt. It's an area full of icy bodies and other dwarf planets at the edge of our solar system. Pluto is known as the "King of …

  7. Exploration of Pluto - Wikipedia

    Early mission proposals Pluto, discovered by Clyde Tombaugh in 1930, is an interesting target for planetary exploration, but Pluto presents significant challenges for exploration because of its …

  8. Pluto’s Close-up, Now in Color - NASA

    Dec 10, 2015 · The wide variety of cratered, mountainous and glacial terrains seen here gives scientists and the public alike a breathtaking, super-high-resolution color window into Pluto’s …

  9. New Findings from NASA’s New Horizons Shape Understanding of Pluto

    Dec 17, 2015 · Among the highlights are insights into Pluto’s geology and composition, as well as new details about the unexpected haze in Pluto’s atmosphere and its interaction with the solar …

  10. Pluto By the Numbers - NASA Solar System Exploration

    Oct 21, 2025 · Pluto was once our solar system's ninth planet, but has been reclassified as a dwarf planet. It's located in the Kuiper Belt.